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• W1252783180 abstract "The antimicrobial potential of two new non-disulfide bound peptides, named VpAmp1.0 (LPFFLLSLIPSAISAIKKI, amidated) and VpAmp2.0 (FWGFLGKLAMKAVPSLIGGNKSSSK) is here reported. These are 19- and 25-aminoacid-long peptides with +2 and +4 net charges, respectively. Their sequences correspond to the predicted mature regions from longer precursors, putatively encoded by cDNAs derived from the venom glands of the Mexican scorpion Vaejovis punctatus. Both peptides were chemically synthesized and assayed against a variety of microorganisms, including pathogenic strains from clinical isolates and strains resistant to conventional antibiotics. Two shorter variants, named VpAmp1.1 (FFLLSLIPSAISAIKKI, amidated) and VpAmp2.1 (FWGFLGKLAMKAVPSLIGGNKK), were also synthesized and tested. The antimicrobial assays revealed that the four synthetic peptides effectively inhibit the growth of both Gram-positive (Staphylococcus aureus and Streptococcus agalactiaea) and Gram-negative (Escherichia coli and Pseudomonas aeruginosa) bacteria, with MICs in the range of 2.5–24.0 μM; yeasts (Candida albicans and Candida glabrata) with MICs of 3.1–50.0 μM; and two clinically isolated strains of Mycobacterium tuberculosis-including a multi-drug resistant one- with MICs in the range of 4.8–30.5 μM. A comparison between the activities of the original peptides and their derivatives gives insight into the structural/functional role of their distinctive residues." @default.
• W1252783180 created "2016-06-24" @default.
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• W1252783180 date "2015-11-01" @default.
• W1252783180 modified "2023-10-02" @default.
• W1252783180 title "Peptides from the scorpion Vaejovis punctatus with broad antimicrobial activity" @default.
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• W1252783180 doi "https://doi.org/10.1016/j.peptides.2015.08.014" @default.
• W1252783180 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/26352292" @default.
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